pak01_dir error 2.1.1.8

When I install 2.1.1.7 - 2.1.1.8 patch I must install again standalone.
Ok, works "maybe" good, but I don't have mutation mod.
When I want join to server I got message.
I must add pak01_dir to folder updateI don't have background in materials/console

Extract this file at "Game Directory\update\" and re-install Standalone patch.

http://www.mediafire.com/?m4kz4lvo0laf095